Re: nitrate filter

["Daniel McMonigle" <Mcdaphnia at msn_com>]

Go to a place that carries Kent Marine products and get a 9 X 9 X 4 inch denitrifying block. Partly bury in gravel if you like or leave it bare in the tank. No pumps or housing is necessary, but if you have a wet dry filter, the sump is an ideal place for it. After about two months the nitrate will begin to drop and then it permanently reaches zero. Removing the log jam of nitrate at the end ought logically to ease the transformation of ammonia to nitrite to nitrate, but I don't know that have been proven. The 9 x 4 X 4 blocks work too, but since the active zone is deep inside, two of these smaller blocks don't equal one of the larger.
  
----- Original Message -----
From: YoHoHo at aol_com
Sent: Sunday, July 21, 2002 8:54 PM
To: KillieTalk at aka_org
Subject: Re: nitrate filter
  
How do you construct a nitrate filter??
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Frank Carriglitto
ChiKA, AKA #08234



> Date: Mon, 22 Jul 2002 02:21:11 +0200
> From: "Erik Pfingstner" <erikpfingstner at freenet_de>
> Subject: AW: changing water . . .
>
> Ha! Here you get some coliding data:
>
> I have been reading opinions in the oposite direction: change water the
> less
> possible! myself I am basically used to big tanks. For my 450 Liters (120
> Gal) tank I have constructed a nitrate filter. I had it run during nearly
> one year and despite changing water very seldomly, I never could measure
> any
> nitrates at all. I never measured phosphates but having no algae at all, I
> did not bother.
>
> The filter went untight some time ago and I constructed another one. I put
> it in use on wensday and had 30 mg/l nitrates and 0.25 mg/l phosphates at
> that time. I bet that in 4-6 weeks, I will have zero nitrates without
> changing any water.
>



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